... are manufacturer of golden vermiculite ,we have own mine and factory ,we can gurantee quality and quantiteis ,our vermiculite have been export ... Russia,Morocco ,etc . welcome to enquiry ,welcome to visit . 1.Crude golden vermiculite size 0-30um,0.3-0.65mm,0.65-1mm ... Special size ,we can do as client's demands 2.Crude golden vermiculite chemicals Composition SiO2 MgO Al2O3 Fe2O3 CaO K2O ph Percentage ...